Wow! I’ve never seen a cook set like this. The pans have a steel base, but the pots feel like that flexible cookware yet they are truly granite lined and look like they will last a lifetime. They stack so neatly inside each other so very space saving in storage. The 2 handles clip on  off all items with ease, the 2 lids are easily interchangeable between frying pans and pots, and are transparent so you can see what’s going on inside without lifting the lid. They go from oven to table to fridge, so clearing up and keeping your leftovers is a breeze.  There are also extras like the tongs, the trivets and the storage lids. An all round exceptional buy.